Internally-armored tire



April 21, 1925. I i 1,534,358

F. A. {au-RNS INTERNALLY ARMORED TIRE Filed Feb. 241 1925 2 Sheets-Sheetl F. A. BURNS INTERNALLY ARMORED TIRE Filed Feb. 24, 1925 2 Sheets-Sheet2 lnlllllllll Frank/Z 9a/22.1.

INVENTOR ATTORNEY `Patented Apr. 2l, 1925.

UNITED s'rATEs FRANK A. BURNS, OF ANAGOIIDA, MONTANA.

`Ilv'inialvatnv-.liRurouni) Tran.

Application filed. February 24, 1923. Serial No.` 621,064. i

To all whom, tmcg/ concer/n.:

Be it known that I, FRANK A. BURNS, a citizen of the United States,residing 'at Anacondmin the county of Deerlodge and State of Montana,have invented new and useful Improvements in` Internally-Armored Tires,of which the followingis a: specification.

The object of'lthis invention is to produce a casing for pneumatic tiresthat shall be `puncture-proof.

` ik further object is'to produce a casing for pneumatic tires. havingremovably arranged on the inner facethereof a telescopic metalreinforcing member and having its side walls widened to form shouldersupon which the edges of the reinforcing member or ring rest, and wherebyboth the tread and side surfaces of the tire will be protected frompunctures by sharp obstacles, etc.

` A still further object is to produce a punc ture-proof tirecasingwhich shall bev of a comparatively simple construction, which willaccommodate the ordinary initiated tube and in which a telescopic treadreinforcing member is employed and is of such construe` tion as to yieldwhen influenced by an inflated tireand to practically telescope orcollapse when thetire is deflated, such lastmentioned arrangement of themember, however, not being great enough to allow the collapsing of thetire even when air is en` tirely let out of the tube.

To the attainment of the foregoing and other objects which will presentthemselves as the nature of the invention is better understood,reference is to be had `to the drawings which accompany and which formpart of this application.

In the drawings Figure l is a sectional perspective view of a tirecasing in accordance with this invention.

Figure 2 is a longitudinal sectional view approximately on the line 2 2of Figure l.

Figure 3 is a transverse sectional view on the line 3-3 of Figure 2.

Figures l and 5 are perspective views of the confronting ends of twosections of the metal reinforcement.

Figure 6 is a perspective view ofthe shield member that covers theconfronting ends of the reinforcing sections.

4 Figure .7 is a fragmentary longitudinal sectional view of the device.

In general appearance, the casing 1 is scopic metal reinforcement.

similar to that of the. ordinary construction. However, in the processof manufacture, I reinforce the side walls of the casing by thickeningthe same, as indicated by the numeral 2. These thickened portionsterminate in straight inner shoulders 3, the outer portions of theshoulders being round ed to therim or beaded edge of the casing.

Arranged in thecasing there is a tele- The reinforce ment may compriseany desired number `of sections, all of which being of equal length, andall of which being arcuate in longitudinal section and transverselybowed. Each section is comparatively thin and is constructed of somelightmetal. such for instance as aluminum. Each section 4 is slottedfrom one of its ends to provide a longitudinal bifurcation. 5, the saidslot extendthrough the edges of the section. The

opposite end of eaehsection is reduced on both ofits faces to provide` atongue `6, and

thetongueof one section is designed to be received in the longitudinalbifurcation 5 of the adjacent' section. Each tongue 6 has longitudinallyarranged spaced slots 7 therethrough, and each section has passedthrough the pocket end thereof stop elements 8 that are received in theslots The stop elements are preferably7 in the nature of short screws,the outer walls of the openings provided therefor being` reamed toreceive the heads of the said screws therein.

Arranged over the joints of the sections there is a transversely boweddouble walled hollow protector member 9, also formed of metal. Themembers 9 are comparatively thin and have their edges, adjacent theirends provided with openings 11 that align with threaded openingsS in theends of the sections 4t, inward of `the tongues 6, and through theseopenings 8 there are passed securing means, such as screws l0. As shownparticularly in Figure2, the inner faces of the vprotective members areHush with the inner faces of the plate sections.

When arranged in the tire, the telescopic reinforcingring is incontacting engagement with the inner' wall of the tread surface and withparts of the sides ofthe casing l, the edges of the said reinforcingmember resting on the shoulders 3 on the side walls 2 of the casing.

In order to protect the inner tube from contact with the telescopicreinforcing members and with the protecting members 9 at the joints atthe confronting ends of said members, I secure on each of the sectionset, but not on the members 9, a continuous faloric sheet l1. Preferablythe sheet ll is secured to the tire by an adhesive material.

From the foregoing description, when taken in connection with thedrawings, it will be noted that my improved tube is protected by themetallic reinforcing ring at the tread surface thereof and at the sidesadjacent the tread surface, while the sides of the casing inward of themetallic protector are reinforced and rendered practicallypuncture-proof by the thickened portions 2 thereof. lt will be furthernoted that the telescopic ring may be expanded or contracted, and thatthe sections thereof will be influenced outwardly with respect to eachother by the intiation of a tube when arranged in the tire. It is to befurther noted that the tongues and sockets are of such. length and thestops 8 arranged in the slots 7 so that when the sections are fullytelescoped, the said reinforcing members will support the tire toprevent the collapsing thereof even when all of the air let out of theinner tube.

It is thought that the foregoing description, when taken in connectionwith he drawings, will fully set forth the construction and advantagesof theimprovement to those. skilled in the art to which this inventionrelates, but it is to be understood that l do not wish myself restrictedto the precise details of construction herein set forth, but hold myselfentitled to all suoli changes therefrom as fall within the scope of theclaims without departing from the spirit of the invention.

I'laving described the invention, I claim The combination with a tireshoe, of a protector arranged therein and includingl a, plurality oftransversely bowed plate sections, each having one end provided withlongitudinal bifurcation, and its opposite end provided with atransversely bowed tongue which is slidably received in the bifurcationof the adjacent plate section, the tongues being provided withlongitudinal slots, an element passing transversely through thebifurcated end and received in the slot whereby to limit thelongitudinal movement of the plate sections in either direction, andtransversely bowed double walled protective members slidably .receivedon the sections and adapted to overlie the connected ends of thesections. the inner faces of the protective members being flush with theinner faces of the plate sections.

In testimony whereof I aflix my signature.

FRANK A. BURNS.

